yattee/Model/Applications/InvidiousAPI.swift
2021-11-15 18:58:45 +01:00

408 lines
14 KiB
Swift

import AVKit
import Defaults
import Foundation
import Siesta
import SwiftyJSON
final class InvidiousAPI: Service, ObservableObject, VideosAPI {
static let basePath = "/api/v1"
@Published var account: Account!
@Published var validInstance = true
@Published var signedIn = false
init(account: Account? = nil) {
super.init()
guard !account.isNil else {
self.account = .init(name: "Empty")
return
}
setAccount(account!)
}
func setAccount(_ account: Account) {
self.account = account
validInstance = false
signedIn = false
configure()
validate()
}
func validate() {
validateInstance()
validateSID()
}
func validateInstance() {
guard !validInstance else {
return
}
home?
.load()
.onSuccess { _ in
self.validInstance = true
}
.onFailure { _ in
self.validInstance = false
}
}
func validateSID() {
guard !signedIn else {
return
}
feed?
.load()
.onSuccess { _ in
self.signedIn = true
}
.onFailure { _ in
self.signedIn = false
}
}
func configure() {
configure {
if !self.account.username.isEmpty {
$0.headers["Cookie"] = self.cookieHeader
}
$0.pipeline[.parsing].add(SwiftyJSONTransformer, contentTypes: ["*/json"])
}
configure("**", requestMethods: [.post]) {
$0.pipeline[.parsing].removeTransformers()
}
configureTransformer(pathPattern("popular"), requestMethods: [.get]) { (content: Entity<JSON>) -> [Video] in
content.json.arrayValue.map(InvidiousAPI.extractVideo)
}
configureTransformer(pathPattern("trending"), requestMethods: [.get]) { (content: Entity<JSON>) -> [Video] in
content.json.arrayValue.map(InvidiousAPI.extractVideo)
}
configureTransformer(pathPattern("search"), requestMethods: [.get]) { (content: Entity<JSON>) -> [ContentItem] in
content.json.arrayValue.map {
let type = $0.dictionaryValue["type"]?.stringValue
if type == "channel" {
return ContentItem(channel: InvidiousAPI.extractChannel(from: $0))
} else if type == "playlist" {
return ContentItem(playlist: InvidiousAPI.extractChannelPlaylist(from: $0))
}
return ContentItem(video: InvidiousAPI.extractVideo(from: $0))
}
}
configureTransformer(pathPattern("search/suggestions"), requestMethods: [.get]) { (content: Entity<JSON>) -> [String] in
if let suggestions = content.json.dictionaryValue["suggestions"] {
return suggestions.arrayValue.map(String.init)
}
return []
}
configureTransformer(pathPattern("auth/playlists"), requestMethods: [.get]) { (content: Entity<JSON>) -> [Playlist] in
content.json.arrayValue.map(Playlist.init)
}
configureTransformer(pathPattern("auth/playlists/*"), requestMethods: [.get]) { (content: Entity<JSON>) -> Playlist in
Playlist(content.json)
}
configureTransformer(pathPattern("auth/playlists"), requestMethods: [.post, .patch]) { (content: Entity<Data>) -> Playlist in
// hacky, to verify if possible to get it in easier way
Playlist(JSON(parseJSON: String(data: content.content, encoding: .utf8)!))
}
configureTransformer(pathPattern("auth/feed"), requestMethods: [.get]) { (content: Entity<JSON>) -> [Video] in
if let feedVideos = content.json.dictionaryValue["videos"] {
return feedVideos.arrayValue.map(InvidiousAPI.extractVideo)
}
return []
}
configureTransformer(pathPattern("auth/subscriptions"), requestMethods: [.get]) { (content: Entity<JSON>) -> [Channel] in
content.json.arrayValue.map(InvidiousAPI.extractChannel)
}
configureTransformer(pathPattern("channels/*"), requestMethods: [.get]) { (content: Entity<JSON>) -> Channel in
InvidiousAPI.extractChannel(from: content.json)
}
configureTransformer(pathPattern("channels/*/latest"), requestMethods: [.get]) { (content: Entity<JSON>) -> [Video] in
content.json.arrayValue.map(InvidiousAPI.extractVideo)
}
configureTransformer(pathPattern("playlists/*"), requestMethods: [.get]) { (content: Entity<JSON>) -> ChannelPlaylist in
InvidiousAPI.extractChannelPlaylist(from: content.json)
}
configureTransformer(pathPattern("videos/*"), requestMethods: [.get]) { (content: Entity<JSON>) -> Video in
InvidiousAPI.extractVideo(from: content.json)
}
}
private func pathPattern(_ path: String) -> String {
"**\(InvidiousAPI.basePath)/\(path)"
}
private func basePathAppending(_ path: String) -> String {
"\(InvidiousAPI.basePath)/\(path)"
}
private var cookieHeader: String {
"SID=\(account.username)"
}
var popular: Resource? {
resource(baseURL: account.url, path: "\(InvidiousAPI.basePath)/popular")
}
func trending(country: Country, category: TrendingCategory?) -> Resource {
resource(baseURL: account.url, path: "\(InvidiousAPI.basePath)/trending")
.withParam("type", category?.name)
.withParam("region", country.rawValue)
}
var home: Resource? {
resource(baseURL: account.url, path: "/feed/subscriptions")
}
var feed: Resource? {
resource(baseURL: account.url, path: "\(InvidiousAPI.basePath)/auth/feed")
}
var subscriptions: Resource? {
resource(baseURL: account.url, path: basePathAppending("auth/subscriptions"))
}
func subscribe(_ channelID: String, onCompletion: @escaping () -> Void = {}) {
resource(baseURL: account.url, path: basePathAppending("auth/subscriptions"))
.child(channelID)
.request(.post)
.onCompletion { _ in onCompletion() }
}
func unsubscribe(_ channelID: String, onCompletion: @escaping () -> Void) {
resource(baseURL: account.url, path: basePathAppending("auth/subscriptions"))
.child(channelID)
.request(.delete)
.onCompletion { _ in onCompletion() }
}
func channel(_ id: String) -> Resource {
resource(baseURL: account.url, path: basePathAppending("channels/\(id)"))
}
func channelVideos(_ id: String) -> Resource {
resource(baseURL: account.url, path: basePathAppending("channels/\(id)/latest"))
}
func video(_ id: String) -> Resource {
resource(baseURL: account.url, path: basePathAppending("videos/\(id)"))
}
var playlists: Resource? {
if account.isNil || account.anonymous {
return nil
}
return resource(baseURL: account.url, path: basePathAppending("auth/playlists"))
}
func playlist(_ id: String) -> Resource? {
resource(baseURL: account.url, path: basePathAppending("auth/playlists/\(id)"))
}
func playlistVideos(_ id: String) -> Resource? {
playlist(id)?.child("videos")
}
func playlistVideo(_ playlistID: String, _ videoID: String) -> Resource? {
playlist(playlistID)?.child("videos").child(videoID)
}
func channelPlaylist(_ id: String) -> Resource? {
resource(baseURL: account.url, path: basePathAppending("playlists/\(id)"))
}
func search(_ query: SearchQuery) -> Resource {
var resource = resource(baseURL: account.url, path: basePathAppending("search"))
.withParam("q", searchQuery(query.query))
.withParam("sort_by", query.sortBy.parameter)
.withParam("type", "all")
if let date = query.date, date != .any {
resource = resource.withParam("date", date.rawValue)
}
if let duration = query.duration, duration != .any {
resource = resource.withParam("duration", duration.rawValue)
}
return resource
}
func searchSuggestions(query: String) -> Resource {
resource(baseURL: account.url, path: basePathAppending("search/suggestions"))
.withParam("q", query.lowercased())
}
private func searchQuery(_ query: String) -> String {
var searchQuery = query
let url = URLComponents(string: query)
if url != nil,
url!.host == "youtu.be"
{
searchQuery = url!.path.replacingOccurrences(of: "/", with: "")
}
let queryItem = url?.queryItems?.first { item in item.name == "v" }
if let id = queryItem?.value {
searchQuery = id
}
return searchQuery
}
static func proxiedAsset(instance: Instance, asset: AVURLAsset) -> AVURLAsset? {
guard let instanceURLComponents = URLComponents(string: instance.apiURL),
var urlComponents = URLComponents(url: asset.url, resolvingAgainstBaseURL: false) else { return nil }
urlComponents.scheme = instanceURLComponents.scheme
urlComponents.host = instanceURLComponents.host
guard let url = urlComponents.url else {
return nil
}
return AVURLAsset(url: url)
}
static func extractVideo(from json: JSON) -> Video {
let indexID: String?
var id: Video.ID
var publishedAt: Date?
if let publishedInterval = json["published"].double {
publishedAt = Date(timeIntervalSince1970: publishedInterval)
}
let videoID = json["videoId"].stringValue
if let index = json["indexId"].string {
indexID = index
id = videoID + index
} else {
indexID = nil
id = videoID
}
return Video(
id: id,
videoID: videoID,
title: json["title"].stringValue,
author: json["author"].stringValue,
length: json["lengthSeconds"].doubleValue,
published: json["publishedText"].stringValue,
views: json["viewCount"].intValue,
description: json["description"].stringValue,
genre: json["genre"].stringValue,
channel: extractChannel(from: json),
thumbnails: extractThumbnails(from: json),
indexID: indexID,
live: json["liveNow"].boolValue,
upcoming: json["isUpcoming"].boolValue,
publishedAt: publishedAt,
likes: json["likeCount"].int,
dislikes: json["dislikeCount"].int,
keywords: json["keywords"].arrayValue.map { $0.stringValue },
streams: extractStreams(from: json),
related: extractRelated(from: json)
)
}
static func extractChannel(from json: JSON) -> Channel {
let thumbnailURL = "https:\(json["authorThumbnails"].arrayValue.first?.dictionaryValue["url"]?.stringValue ?? "")"
return Channel(
id: json["authorId"].stringValue,
name: json["author"].stringValue,
thumbnailURL: URL(string: thumbnailURL),
subscriptionsCount: json["subCount"].int,
subscriptionsText: json["subCountText"].string,
videos: json.dictionaryValue["latestVideos"]?.arrayValue.map(InvidiousAPI.extractVideo) ?? []
)
}
static func extractChannelPlaylist(from json: JSON) -> ChannelPlaylist {
let details = json.dictionaryValue
return ChannelPlaylist(
id: details["playlistId"]!.stringValue,
title: details["title"]!.stringValue,
thumbnailURL: details["playlistThumbnail"]?.url,
channel: extractChannel(from: json),
videos: details["videos"]?.arrayValue.compactMap(InvidiousAPI.extractVideo) ?? []
)
}
private static func extractThumbnails(from details: JSON) -> [Thumbnail] {
details["videoThumbnails"].arrayValue.map { json in
Thumbnail(url: json["url"].url!, quality: .init(rawValue: json["quality"].string!)!)
}
}
private static func extractStreams(from json: JSON) -> [Stream] {
extractFormatStreams(from: json["formatStreams"].arrayValue) +
extractAdaptiveFormats(from: json["adaptiveFormats"].arrayValue)
}
private static func extractFormatStreams(from streams: [JSON]) -> [Stream] {
streams.map {
SingleAssetStream(
avAsset: AVURLAsset(url: $0["url"].url!),
resolution: Stream.Resolution.from(resolution: $0["resolution"].stringValue),
kind: .stream,
encoding: $0["encoding"].stringValue
)
}
}
private static func extractAdaptiveFormats(from streams: [JSON]) -> [Stream] {
let audioAssetURL = streams.first { $0["type"].stringValue.starts(with: "audio/mp4") }
guard audioAssetURL != nil else {
return []
}
let videoAssetsURLs = streams.filter { $0["type"].stringValue.starts(with: "video/mp4") && $0["encoding"].stringValue == "h264" }
return videoAssetsURLs.map {
Stream(
audioAsset: AVURLAsset(url: audioAssetURL!["url"].url!),
videoAsset: AVURLAsset(url: $0["url"].url!),
resolution: Stream.Resolution.from(resolution: $0["resolution"].stringValue),
kind: .adaptive,
encoding: $0["encoding"].stringValue
)
}
}
private static func extractRelated(from content: JSON) -> [Video] {
content
.dictionaryValue["recommendedVideos"]?
.arrayValue
.compactMap(extractVideo(from:)) ?? []
}
}